Use the edge function in matlab

最新推荐文章于 2021-03-20 13:33:55 发布

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#matlab #function #command #linux #file #input

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本文介绍了在使用Matlab进行图像边缘检测时遇到的问题及解决方案。作者尝试使用'prewitt'方法对图像进行边缘检测时出现了错误提示，原因是输入图像不符合二维要求。通过调整图像文件格式为256位并在Linux环境下重新读取图像，问题得以解决。

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As previous metioned that I install the matlab on our linux workstation and last night & this morning just write matlab code to give an edge of an image

frist learn the help file in the matlab

It's easy

and in the ommand window just type the command like this:

>> I = imread('1.png');

It's all right

and then

>> BW = edge(I,'prewitt');

there are some errors

??? Function EDGE expected its first input, I, to be two-dimensional.

Error in ==> edge>parse_inputs at 564
iptcheckinput(I,{'numeric'},{'nonsparse','2d'},mfilename,'I',1);

Error in ==> edge at 197
[a,method,thresh,sigma,thinning,H,kx,ky] = parse_inputs(varargin{:});

what's wrong?

That because file the edge function needed must 256-bit file

so usb the linux Koulor editer change the image

rerun the command

it's ok

the command is like follow

>> I = imread('1.png');
>> BW = edge(I,'prewitt');
>> imshow(BW);